"642482" . "Deproteination of Chrome Waste by Washing and Enzymatic Hydrolysis" . . . . "28110" . "0"^^ . "Z(MSM 265200014), Z(MSM 281100002)" . . "0"^^ . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Journal of the American Leather Chemists Association" . "deproteination, chrome\u010D, hydrolysis, enzymes, washing"@en . "Deproteination of Chrome Waste by Washing and Enzymatic Hydrolysis"@en . "Rudlov\u00E1, S." . "XCVII" . . . "RIV/70883521:28110/02:63500564!RIV/2003/MSM/281103/N" . . . . "0002-9726" . "RIV/70883521:28110/02:63500564" . "Deproteination of Chrome Waste by Washing and Enzymatic Hydrolysis" . "Waste from the manufacture of chrome-tanned leathers (so-called shavings) can be processed (apart from alkaline or acid breakdown) by enzymatic hydrolysis employing alkaline proteases. Under mild reaction conditions, a soluble collagen hydrolyzate is formesd and a solid fraction (so-called chrome cake) with high chromium content is formed after filtration. Further use of the chrome cake, e.g., tanning bath recycling, necessitates a maximum possible reduction in the protein fraction. This work performed deproteination of the chrome cake by decantation washing with water and enzymatic hydrolysis. Decantation washing of the chrome cake obtained after twostage enzymatic hydrolysis of chrome-tanned shavings was performed six times with drinking water at laboratory temperature. A reduction in protein content occurs, as was proved by chemical analysis of chrome cakes prior to and after washing. Further deproteination of the chrome cake so washed (hence disposed of soluble part) was executed by means of addit" . . . "349-354" . . . . "Waste from the manufacture of chrome-tanned leathers (so-called shavings) can be processed (apart from alkaline or acid breakdown) by enzymatic hydrolysis employing alkaline proteases. Under mild reaction conditions, a soluble collagen hydrolyzate is formesd and a solid fraction (so-called chrome cake) with high chromium content is formed after filtration. Further use of the chrome cake, e.g., tanning bath recycling, necessitates a maximum possible reduction in the protein fraction. This work performed deproteination of the chrome cake by decantation washing with water and enzymatic hydrolysis. Decantation washing of the chrome cake obtained after twostage enzymatic hydrolysis of chrome-tanned shavings was performed six times with drinking water at laboratory temperature. A reduction in protein content occurs, as was proved by chemical analysis of chrome cakes prior to and after washing. Further deproteination of the chrome cake so washed (hence disposed of soluble part) was executed by means of addit"@en . "Deproteination of Chrome Waste by Washing and Enzymatic Hydrolysis"@en . "9" . . . "6"^^ . "Dvo\u0159\u00E1\u010Dkov\u00E1, Marie" . . "[ACED3D448282]" . "5"^^ . . "Kolomazn\u00EDk, Karel" . "Kupec, Jan" . "R\u016F\u017Ei\u010Dka, Jan" . . . "4"^^ .